CN101872501A - Device for detecting thickness of medium - Google Patents
Device for detecting thickness of medium Download PDFInfo
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- CN101872501A CN101872501A CN201010168941A CN201010168941A CN101872501A CN 101872501 A CN101872501 A CN 101872501A CN 201010168941 A CN201010168941 A CN 201010168941A CN 201010168941 A CN201010168941 A CN 201010168941A CN 101872501 A CN101872501 A CN 101872501A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/16—Testing the dimensions
- G07D7/164—Thickness
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/181—Testing mechanical properties or condition, e.g. wear or tear
- G07D7/183—Detecting folds or doubles
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- Inspection Of Paper Currency And Valuable Securities (AREA)
- Controlling Sheets Or Webs (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
The present invention provides a device for detecting the thickness of a medium which can accurately detect the thickness of the medium even a plurality of displacement detecting sensors are closely configured and magnetic fields of each of the displacement detecting sensor will not interfere. The structure is that: the displacement detecting sensors (33a-331) are arranged in pairs according to each of the detecting rollers (34a-34f), detecting a roller displacement amount of the detecting rollers (34a-34f) to elastically displace according to magnetic field changes generated from a coil of each of the displacement detecting sensors (33a-331) which are arranged in pairs, thereby detecting the thickness of the medium. The plurality of displacement detecting sensors (33a-331) arranged along an axial direction of the detecting rollers (34a-34f) are divided into non-adjacent groups (a, b); the non-adjacent groups (a, b) are groups divided by differentiating the non-adjacent displacement detecting sensors on the arrangement direction, thereby switching the non-adjacent groups (a, b) which obtain the roller displacement amount.
Description
Technical field
The present invention relates to the device for detecting thickness of medium of the thickness of media such as bank note that a kind of detection is used for concluding the business, securities, stamp on automated transaction machine.
Background technology
Usually, with regard to the bank note treatment device that the automated transaction machine inside in the automated transaction district that is arranged at financial institution etc. is constituted, degradation mode or the altered note of differentiating circulating paper money are very important, therefore possess bill discriminating apparatus in the inside of bank note treatment device.
In recent years, the forgery of bank note, adulterium technology be ingeniousization day by day, occurred various media such as bank note, securities, stamp (hereinafter referred to as the paper class) by the adulterium certificate that small adhesive tape, paper, paster etc. are practised fraud, be necessary the thickness characteristics of these adulterium certificates is carried out correct detection identification.Therefore, be necessary to improve the accuracy of detection of thickness detection apparatus.As an example wherein, whether having proposed a kind of thickness by the paper class, to discern the paper class be the thickness detector for paper sheet of forging (for example, referring to patent documentation 1).
The disclosed detection technique of the thickness detection apparatus of above-mentioned paper class is: reference roller is set in pairs and the measuring roll of elastic displacement according to paper class thickness, by with the paper class one by one between these rollers clamping transport, measuring roll elastic displacement and detecting is being pasted the protuberance of part such as adhesive tape, and displacement detecting sensor detects its displacement just can detect situations such as posting adhesive tape.
, with regard to above-mentioned detection technique, need be to all correct detection of the very big sensing range of paper.Therefore,, need reduce on the Width that transports, to dispose the configuration space of a plurality of displacement detecting sensors, so that seamlessly closely arrange between this displacement detecting sensor in order to eliminate the not surveyed area of paper class as far as possible.
Yet when the configuration space of displacement detecting sensor was tight, the displacement detecting sensor that can cause adjacency is magnetic interference to each other, can not correctly measure the closer to disturbing strong more.Limited aspect the tightness degree of the configuration space of displacement detecting sensor thus, with regard to present situation, the configuration space of displacement detecting sensor need be drawn back more than the certain intervals, so can not improve the thickness accuracy of detection of paper class.Therefore, for example transporting when as the folding bank note or the bank note of fracture etc. the circulating paper money of damage being arranged, the problem of number counting can not be correctly carried out in existence.
Summary of the invention
So the present invention is a purpose to solve the problems of the technologies described above, and a kind of device for detecting thickness of medium is provided, even a plurality of displacement detecting sensor compact configuration, the magnetic field of adjacent displacement detecting sensor does not interfere with each other yet, and can correctly detect dielectric thickness.
The present invention is a kind of device for detecting thickness of medium, it is characterized by, and possesses: reference roller; The measuring roll group is built-in with elastic component and allows elastic displacement diametrically, and with the said reference roller mutually opposed to each other same axially on a plurality of measuring rolls of configuration; Conveyer at least one side in opposed said reference roller and the measuring roll group is rotated driving, and medium is transported in clamping between two rollers; The displacement detecting sensor group is provided with displacement detecting sensor in pairs by each above-mentioned measuring roll, and the magnetic field that produces according to the coil from this each displacement detecting sensor that is provided with in pairs this situation that changes detects the roller displacement of above-mentioned measuring roll elastic displacement; And switching mechanism, to be divided into non-adjacent group along a plurality of displacement detecting sensors of the axial array of above-mentioned measuring roll, this non-adjacent group be in this orientation not the non-adjacent displacement detecting sensor of adjacency distinguish the group that forms each other, switch obtaining above-mentioned non-adjacent group of above-mentioned roller displacement.
The invention effect
According to the present invention, can avoid the magnetic interference between the adjacent displacement detecting sensor, even compact configuration between displacement detecting sensor also can be stablized the high-resolution accuracy of detection of acquisition.
Description of drawings
Fig. 1 is the cut-away view of bank note conveyer.
Fig. 2 is the cut-away view of discriminating portion.
Fig. 3 is the front view of the configuration relation of expression measuring roll and displacement detecting sensor.
Fig. 4 is the main position front view of an example of expression detecting sensor and displacement state.
Fig. 5 is the key diagram of expression by each passage switching state of different non-adjacent group of displacement detecting sensor.
Fig. 6 is the oblique view that a substrate-integrated displacement detecting sensor part is launched expression.
Fig. 7 is the planimetric map of the configuration relation of the displacement detecting roller of expression zigzag configuration and displacement detecting sensor.
Fig. 8 is the control circuit block diagram of thickness detection apparatus.
Fig. 9 (A) is the sequential chart of the detection data in expression each passage when judging about the bank note number, and Fig. 9 (B) is the detection data of bank note number judgement are carried out in expression according to the summation of each passage a sequential chart.
The sequential chart of the detection data when Figure 10 is the detection of expression adulterium certificate.
The key diagram of the concrete decision state when Figure 11 is the detection of expression adulterium certificate.
Symbol description:
2 ... discriminating portion, 26 ... thickness transducer, 27 ... scrambler, 28 ... control part, 30 ... bank note, 33 ... the displacement detecting sensor group, 33a～331 ... displacement detecting sensor, 34 ... the measuring roll group, 34a～34f ... measuring roll, 35 ... the sensor handling part, 36 ... reference roller, 61 ... substrate, 62 ... coil, 63 ... one-piece type substrate, 71 ... detecting unit, 72 ... transport the gap, a, b ... passage
Embodiment
Below, based on accompanying drawing embodiments of the present invention are described.Accompanying drawing illustrates for example cash automatic access device (ATM) of the financial institution that is arranged on bank etc., and the embodiment that the thickness that improves the discriminating portion that is installed on this ATM inside detects performance is shown.
Fig. 1 is illustrated in the inner bank note conveyer that constitutes as the ATM of one embodiment of the present of invention, in this embodiment, and to being that the situation that the example of medium is handled describes with bank note.
In this bank note conveyer, the 1st, the temporary transient reserve part of bank note has been counted in temporary collection; The 2nd, the Currency Type, the true and false of identification bank note, towards the identification part of, degree of injury; 3a～3d is the incorporating section of collecting bank note by Currency Type; The 4th, take in the recoverer of the bank note of the portion of being identified 2 refusal; The 5th, articulating depositing mouth 20, identification part 2, temporary transient reserve part 1, strap brake door conveying end 21 and return mouthful 22 tops of transporting bank note and transport the path; The 6th, bank note is transported path 5 transport the bottom in path 5 and transport the path from top via being transported to top above incorporating section 3a～3d and the recoverer 4 again; The 7th, transport the depositing mouth that transports bank note in path 5 from depositing mouth 20 to top and transport the path; The 8th, transport path 5 from top and transport the path to the conveying end that strap brake door conveying end 21 transports bank note; The 9th, transport path 5 from top and transport the path to returning mouthful 22 mouths of returning that transport bank note; The 10th, transport the temporary transient reserve part of transporting bank note to temporary transient reserve part 1 in path 5 from top and take in and transport the path; The 11st, transport path 5 from temporary transient reserve part 1 to top and transport the temporary transient reserve part of bank note and send successively and transport the path; 12a～12d transports path 6 to take in to the incorporating section that incorporating section 3a～3d transports bank note and transport the path from the bottom; 13a～13d transports path 6 from incorporating section 3a～3d to the bottom to transport the incorporating section of bank note and send successively and transport the path; The 14th, transport path 6 from the bottom and transport the path to the recoverer that recoverer 4 transports bank note; The 15th, the sensor 16 that passes through that detection bank note passes through is the switching doors that switch the bank note carriage direction; The 17th, detect the depositing mouth banknote detection sensor whether depositing mouth 20 has bank note; The 18th, detect the conveying end detecting sensor whether strap brake door conveying end 21 has bank note; The 19th, detect and return mouthful banknote detection sensor of returning whether mouth 22 has bank note.
Fig. 2 is the skeleton diagram of the primary structure of expression identification part 2.
This identification part 2 possesses while transporting the bank note 30 that is directed so far to its bank note conveyer of discerning 31.This bank note conveyer 31 be provided with possess along transport that the path width direction sets up relative up and down on transport roller 23a and transport the roller portion 23 that transports of roller 23b down.These transport roller 23a, 23b up and down by rotating from the next revolving force of motor transmission that transports not shown in the figures, and bank note 30 is directed so far with the horizontality of growing crosswise, and this bank note 30 of clamping transports one by one up and down.In addition, have can heavily send transport the high structure of admissibility, even so that the damage of the folding bank note or the bank note of fracture etc. circulating paper money also can transport swimmingly.
In addition, in the identification part 2, after transporting roller portion 23, have: color linear sensor 24, check the transit dose of bank note 30 or the transit dose of printing ink; Magnetic Sensor 25, the magnetic of the magnetic force printing ink that is coated with on the identification bank note 30; Thickness transducer 26, detect bank note 30 thickness, have or not the concavo-convex of adhesive tape or fiber etc.; Scrambler 27, with the bank note 30 that drives based on transporting of above-mentioned bank note conveyer 31 transport apart from synchronously clock signal; Control part 28 is according to detection data judging Currency Type, number, the true and false of above-mentioned thickness transducer 26.
Thereby in identification part 2, what Currency Type the bank note 30 that identification is directed so far is; And identification is true certificate or false certificate; Also identification is one, the bank note more than two or three; Transaction is managed with bank note.Also have, no matter bank note conveyer 31 constitutes and to transport bank note 30 from which direction back and forth and can discern.
Below, the concrete structure of the thickness transducer 26 that possesses about identification part 2 describes with reference to Fig. 3.
This thickness transducer 26 disposes: benchmark roll shaft 37, as the turning axle that can transmit the revolving force that transports drive system that comes from bank note conveyer 31; Reference roller 36, this benchmark roll shaft 37 same axially on for example 6 of narrow width interval configurations; 6 measuring roll 34a～34f are configured on the detection roll shaft 38 mutually opposed to each other with these 6 reference roller 36; Measuring roll group 34, these 6 measuring roll 34a～34f are crushed on and do driven rotation on the reference roller 36; Displacement detecting sensor 33a～331 for example dispose 2 by each above-mentioned measuring roll 34a～34f mutually opposed to each other with each above-mentioned measuring roll 34a～34f, add up to 12; Displacement detecting sensor group 33, the magnetic field that takes place based on the coil that makes each displacement detecting sensor 33a～331 this situation that changes detects the roller displacement that elastic displacement has taken place above-mentioned measuring roll 34a～34f; Sensor handling part 35 is handled the input data from this displacement detecting sensor group 33.Though said reference roller 36 is to be that example is represented along transporting 6 of Width configurations, also can be made of a long roll shaft.
Fig. 4 amplifies the main position key diagram that shows with the part of thickness transducer 26.Here in the explanation to thickness transducer 26, with the left test section of being made up of above-below direction 2 displacement detecting sensor 33a, 33b and measuring roll 34a and reference roller 36, and the right test section of being made up of above-below direction 2 displacement detecting sensor 33c, the 33d on its right side and measuring roll 34b and reference roller 36 is that example describes for these 2 groups.
Above-mentioned measuring roll 34a, 34b, elastomeric element 39a, the 39b of softness such as filled rubber at foreign steamer 32a that the cylinder-like part by metal etc. constitutes and between and constitute as the detection roll shaft 38 of its central shaft.On the other hand, reference roller 36 is made of metal, is designed to the unshift reference field of outer peripheral face, docks with above-mentioned measuring roll 34a, 34b herein.
Like this, when bank note 30 is nipped between the roller surface of two groups of measuring roll 34a, 34b of the reference roller 36,36 of the left and right sides and the left and right sides, elastomeric element 39a, 39b distortion, the amount of distortion is the amount of the thickness of bank note 30, foreign steamer 32a, 32b are to top offset.
This displacement detects output and bank note 30 thickness relevant detection signals by 2 displacement detecting sensor 33a, the 33b in left side and 2 displacement detecting sensor 33c, the 33d on right side.Detection signal carries out signal Processing through sensor handling part 35, for this displacement, digital signal is delivered to control part 28.In control part 28, by judged by the thickness data of the bank note 30 sent here have or not overlappingly more than two transport, whether be that adulterium certificate, the true certificate that posts adhesive tape etc. still is false certificate.
In addition, with respect to 1 measuring roll 34a, by 2 displacement detecting sensor 33a, 33b are set at two ends mutually opposed to each other, for example post on the paper under the situation (referring to Fig. 4) of adhesive tape TA, measuring roll 34a, 34b about the both ends of this adhesive tape TA are crossed over and contact with it, two measuring roll 34a, 34b are simultaneously one-sided be pressed in (Pian ?り) this adhesive tape TA goes up and inclined in opposite directions, so can detect the displacement of measuring roll 34a, 34b.
In order correctly to detect the very big sensing range of bank note 30, in order to reduce the not sensing range of bank note 30 as far as possible, the configuration space that preferably reduces a plurality of displacement detecting sensor 33a～331 makes between this sensor does not have the gap.For this reason, dwindle the configuration space of crossing over each displacement detecting sensor 33a～331 transport Width and to arrange and compact configuration.
Therefore, these displacement detecting sensors 33a～331 make magnetic field can not disturb mutually with the approximating arranged spaced almost very close to each other of the displacement detecting sensor of adjacency.So closely dispose the interval of displacement detecting sensor 33a～331, the displacement detecting sensor magnetic field of adjacency can not disturbed mutually, can correctly detect the thickness of bank note 30, below such thickness detection technique is described.
This thickness detection technique is a kind of like this technology, that is: will be divided into 2 passages (channel) (passage a, passage b among Fig. 5) along a plurality of displacement detecting sensor 33a～331 of measuring roll 34a～34f axial array, just by in this orientation not the non-adjacent measuring roll of adjacency be distinguished from each other two non-adjacent group that forms, shown in Fig. 5 (A), alternatively switch output to non-adjacent group of oscillating voltage that applies after this differentiation.
For example, shown in Fig. 5 (B), in displacement detecting sensor 33a～33d, start anew to be divided into odd-numbered group 33a, 33c ... with even-numbered group 33b, 33d ... two groups, by these two groups, interactive ON/OFF switching is carried out in output to oscillating voltage.That is to say odd-numbered group 33a, 33c ... the duration of oscillation, even-numbered group 33b, 33d ... vibration stops.
When the group of these two kinds was vibrated control, each displacement detecting sensor was exported in (vibration), was because the output (interference) simultaneously of adjacent displacement detecting sensor.That is to say that grouping becomes the means that avoid interference.
Like this, though make the coil of displacement detecting sensor produce magnetic field with the hunting of frequency of regulation, but do not make the vibration carried out from these displacement detecting sensors 33a～33d regularly synchronously, vibrate alternately owing to can make with the group of two kinds distinguishing every one interval, therefore, even this displacement detecting sensor compact configuration can not be subjected to the influence from the magnetic field of adjacent displacement detecting sensor yet.
Thus, the magnetic interference between the displacement detecting sensor can be avoided, and obtains high-resolution accuracy of detection even the compact configuration displacement detecting sensor also can be stablized.
Fig. 6 is the topology example of substrate-integrated displacement detecting sensor, on substrate 61 to doing narrow width interval printed wiring as a plurality of coils 62 of displacement detecting sensor, with this through substrate 61 configuration examples of printed wiring as 4 plies one-piece type substrate 63 together.By using this one-piece type substrate 63, can dwindle the interval of coil 62.Consequently, become the good magnetic test coil of small-sized precision, can be combined into cramped construction with high measurement accuracy.
Also having, though as displacement detecting sensor the changes of magnetic field based on coil is illustrated, also can be that for example mechanical type switches the mode of (ON/OFF) permanent magnet etc.In addition, also can use magnetic field detecting sensors such as MR element (magnetoresistive element), MI element (magnetic impedance element), Hall element.
, in the above description, the distinctive detection technique of having avoided influence of magnetic field is illustrated, but can also further improves accuracy of detection.That is to say, under the situation of the configuration structure of above-mentioned displacement detecting sensor 33a～331, dispose a plurality of measuring roll 34a, 34b ... in abutting connection with at interval, become not the part that directly contacts with bank note 30, what produced non-detection position transports gap 72 (referring to Fig. 7).For this reason, next expression can be transported gap 72 to this and be replenished the structure that detects.
Figure 7 shows that the measuring roll 34a of vertical view indentation configuration ... with displacement detecting sensor 33a ... configuration relation.For example, to possess above-mentioned 6 reference roller 36 ... 12 displacement detecting sensor 33a～331 of (referring to Fig. 3), 6 measuring roll 34a～34f and printed wiring on one-piece type substrate 63 and the detecting unit 71 that constitutes are configured to 2 row along the leading portion side and the rear section side of bank note carriage direction.Here, make rear section side measuring roll 34a and as the non-detection position between the measuring roll of leading portion side transport gap 72 accordingly, be configured to overlook the structure of indentation.
Like this, though a plurality of measuring roll 34a, certainly lead between the 34b and transport gap 72, but transport the relative rear section side measuring roll 34a in gap 72 with this and replenish detection and can have with omitting the integral body of bank note 30 is not detected owing to rely on, so even the sensing range of bank note is very wide, also can correctly detect the convex-concave displacement of bank note.
Below, the control structure of thickness transducer 26 is described with reference to Fig. 8.Here, 2 displacement detecting sensor 33a, the 33b that the passage b with a side passage a and the opposing party is switched accordingly situation about controlling is illustrated.
This oscillatory circuit 40a, 40b are self-maintained circuits, when producing AC magnetic field, based on this AC magnetic field this situation that changes, detect the roller displacement of measuring roll elastic displacement.Therefore, can revise the deviation in the magnetic field of each passage of producing by the deviation of coil and electric capacity, can guarantee the thickness transducer that precision is good by each passage.
In addition, when judging displacement output, the degree of tilt of trying to achieve according to the linear approximate expression of the thickness of storage from nonvolatile memory 45 is converted into the displacement of bank note, calculates the displacement at bank note 30 each position.In this nonvolatile memory 45, as storing mechanism, the degree of tilt of the linear approximate expression of displacement of each passage a, b that storage is in advance calculated from a plurality of displacement level.Also have, storage in advance with two with the corresponding output level of top roll displacement, these two are relevant with the roller displacement of the banknote thickness that comprises no bank note state with the top roll displacement.In control part 28, carry out determination processing like this, easily.
Then, this displacement is input to detection unit 49 in the control part 28, having or not of attachment such as the number of bank note 30 and adhesive tape are judged.In this control part 28, mechanism works as difference, displacement detecting sensor 33a when passing through in the hope of going out bank note ... incoming level and through above-mentioned offset correction circuit 44a, the adjusted bank note of 44b not by the time incoming level between difference, the output level of derivation thus and the output level of above-mentioned nonvolatile memory 45 stored are compared, judge the thickness of bank note.When carrying out this when comparing to determine,, can correctly try to achieve the thickness displacement by carrying out linear-apporximation between the point to each thickness.
Thus, because the thickness displacement that can influence in the hope of the degree of deviation of the temperature that is not subjected to sensor or device, and between the thickness displacement of nonvolatile memory 45 stored, can guarantee linearity, so can be made into the thickness transducer of high dynamic range.Therefore, can guarantee the thickness transducer that precision is good.
Switch-over control signal 48 is synchronously exported sample clock signal with scrambler 27 (referring to Fig. 2), and with switching time signal export to oscillation control circuit 50a, 50b.That is, by switch-over control signal 48, with the travelling speed of the bank note 30 of bank note conveyer 31 synchronously, switch non-adjacent group passage a, b (referring to Fig. 5) obtain the roller displacement in detection time so that on its carriage direction, carry out the unit that thickness detects.
Like this, even travelling speed changes, also can obtain the constant concavo-convex displacement diagram picture of resolution for carriage direction.Also having, also can be to obtain the timing of data, by the structure of output such as scrambler 27 grades with respect to the pulse of bank note 30 forward travel distances.For the known in advance situation of speed of passing through of bank note 30, also can be the structure that the output and the bank note of hypothesis pass through the signal of speed synchronization.
During switch-over control signal 48 is " ON ", oscillation control circuit 50a, 50b to oscillatory circuit 40a, 40b as transistor 42a, the 42b of negative resistance output, make transistor 42a, 42b conducting and carry out the higher-order of oscillation.Oscillatory circuit 40a, 40b only carry out the higher-order of oscillation during oscillation control circuit 50a, 50b are for " ON ".Thereby each oscillation control circuit 50a, 50b of displacement detecting sensor 33a, the 33b of both sides adjacency carry out the exclusive action of a side ON, the opposing party OFF simultaneously.
From the sensor handling part 35 when the control part 28 as upper control part transmits data, during switching to another non-detection status of non-adjacent group, make it become the data of the detection level before continuing to switch, sensor handling part 35 becomes processing mechanism, sends the output data of having carried out data processing here to control part 28.Thus, control part 28 can carry out common process.Particularly, its continuation data that become the detection level before continue switching are handled, thereby the output data that is transferred into control part 28 can access high-resolution concavo-convex displacement diagram picture.
In last example, in the middle of 12 passage 33a～331, divide into odd-numbered group 33a, 33c ... with even-numbered group 33b, 33d ... two groups (passage a, b), the displacement detecting sensor of adjacency is output simultaneously not, that is to say noiseless, so long as glitch-free circuit structure divides into groups all can in any case.For example, the interval of displacement detecting sensor being isolated the displacement detecting sensor of distinguishing by 2 interval or 3 s' compartment of terrain also can as one group of use.
Below, about the decision method of the bank note that in detection unit 49, is transported 30, illustrate with Fig. 9 for several.In the waveform 51 of Fig. 9 (A) expression, the longitudinal axis is represented each channel C H0, CH1 ... the displacement output of CH10, CH11 (a, b), transverse axis is represented the displacement of bank note 30.
Fig. 9 (B) is illustrated in the waveform 52 of the displacement output sum of each passage of describing among Fig. 9 (A).
At first, detection unit 49 extracts measuring roll 34a ... the scope of last bank note 30 contacts.At this moment, if the mean value of bank note 30 is and 2.5 of bank note 30 suitable threshold values more than 53, then be judged to be more than 3, for less than above-mentioned threshold value with 1.5 of bank note 30 suitable threshold values more than 54, then be judged to be 2, if less than threshold value 54 then be judged to be 1.
Below, illustrate for the decision method that posts adhesive tape on the bank note 30 in detection unit 49 with Figure 10, Figure 11.
Figure 10 is the situation (referring to Fig. 4) that expression is passed through about the adulterium certificate that posts adhesive tape, the waveform 55 of displacement detecting sensor 33a, 33b in the middle of each passage a, b.The longitudinal axis is represented displacement output.Transverse axis is represented the displacement of bank note 30.
The threshold value of these waveforms 55 is because the thickness of bank note 30 is different or because the thickness of the environmental change bank note integral body of bank note self changes, so former state ground setting threshold is had any problem along with the difference in place.Therefore, at first extract bank note integral body and be stated from scope on the roller.What represent on Figure 11 at this moment, is the waveform 56 that the mid-depth value (carriage direction and the center of transporting the thickness of Width) with bank note integral body is exported as the displacement of benchmark.Then, by the banknote thickness of target zone, represent as the planimetric map of bank note with the image 58 that the protuberance threshold value 57 of bank note each several part is carried out after the binaryzation.And,, then be judged to be a certain size the attachment of adhesive tape etc. if its area is the size of threshold value more than 59.Thereby, the adulterium certificate that overlappingly transports, alters with adhesive tape or paper etc. that can detect bank note 30 accurately and be two, three.
As above institute this, even compact configuration between the displacement detecting sensor of adjacency owing to can avoid magnetic interference between this displacement detecting sensor, therefore can be stablized and obtains high-resolution accuracy of detection.Therefore, with the shipping situation of medium irrespectively, can correctly distinguish the trickle concavo-convex variable condition of medium, satisfy the security performance of bank note, carry out high-precision judgement.
The present invention is not limited only to an above-mentioned structure that embodiment put down in writing, and can be based on the application of the technological thought of claim record.For example, in an above-mentioned embodiment, the bank note 30 that uses as an example of medium, even but other media of bill, check, value card, coupons etc. also be suitable for.
Utilizability on the industry
The present invention can be for the treatment of automatic access device, the checkout machine of bank note etc., sell the automated transaction machine of certificate machine etc.
Claims (7)
1. a device for detecting thickness of medium is characterized by,
Possess:
Reference roller;
The measuring roll group is built-in with elastic component and allows elastic displacement diametrically, and with the said reference roller mutually opposed to each other same axially on a plurality of measuring rolls of configuration;
Conveyer at least one side in opposed said reference roller and the measuring roll group is rotated driving, and medium is transported in clamping between two rollers;
The displacement detecting sensor group is provided with displacement detecting sensor in pairs by each above-mentioned measuring roll, and the magnetic field that produces according to the coil from this each displacement detecting sensor that is provided with in pairs this situation that changes detects the roller displacement of above-mentioned measuring roll elastic displacement; And
Switching mechanism, to be divided into non-adjacent group along a plurality of displacement detecting sensors of the axial array of above-mentioned measuring roll, this non-adjacent group be in this orientation not the non-adjacent displacement detecting sensor of adjacency distinguish the group that forms each other, switch obtaining above-mentioned non-adjacent group of above-mentioned roller displacement.
2. device for detecting thickness of medium as claimed in claim 1 is characterized by,
Along a plurality of dielectric thickness detecting units that possess said reference roller, above-mentioned measuring roll group and above-mentioned displacement detecting sensor group and constitute of medium carriage direction configuration;
Be configured in the measuring roll at least of the dielectric thickness detecting unit of the leading portion side of above-mentioned medium carriage direction and rear section side, at leading portion side and rear section side, the zigzag that is configured to make non-detection position between a side measuring roll and the opposing party's measuring roll to dispose accordingly.
3. device for detecting thickness of medium as claimed in claim 1 or 2 is characterized by,
Above-mentioned switching mechanism is obtained above-mentioned non-adjacent group of above-mentioned roller displacement and is switched synchronously carrying out unit that thickness detects with the travelling speed of the medium of above-mentioned conveyer on the carriage direction of medium in detection time.
4. device for detecting thickness of medium as claimed in claim 1 is characterized by,
Possess:
Adjusting mechanism, with medium not by the time the incoming level of displacement detecting sensor be adjusted into specified level;
Storing mechanism, in advance the storage with at least two with the corresponding output level of top roll displacement, these at least two are relevant with the roller displacement of dielectric thickness with the top roll displacement;
Difference mechanism, obtain medium by the time displacement detecting sensor incoming level and by the adjusted medium of above-mentioned adjusting mechanism by the time specified level between difference; And
Decision mechanism, the output level that above-mentioned difference mechanism is obtained and the output level of above-mentioned storing mechanism storage compare, and judge the thickness of medium.
5. device for detecting thickness of medium as claimed in claim 1 is characterized by,
Possess:
Storing mechanism is temporarily stored the detected data of above-mentioned displacement detecting sensor;
Processing mechanism during the non-detection status after switching to other non-adjacent group, continues detection level before switching and carries out data processing;
Connecting gear is to the data of upper control part transfer roller displacement; And
Control gear transmits by the output data after the above-mentioned processing mechanism processing by above-mentioned connecting gear.
6. as the described device for detecting thickness of medium of above-mentioned claim 1, it is characterized by,
The coil that above-mentioned a plurality of displacement detecting sensor forms by carry out printed wiring on substrate constitutes.
7. as the described device for detecting thickness of medium of above-mentioned claim 1, it is characterized by,
Above-mentioned displacement detecting sensor possesses:
AC magnetic field produces mechanism, produces AC magnetic field; And
Self-maintained circuit according to being produced AC magnetic field that mechanism produces this situation that changes by above-mentioned AC magnetic field, detects the roller displacement of measuring roll elastic displacement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP107633/2009 | 2009-04-27 | ||
| JP2009107633A JP2010257292A (en) | 2009-04-27 | 2009-04-27 | Medium thickness detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101872501A true CN101872501A (en) | 2010-10-27 |
| CN101872501B CN101872501B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101689418A Expired - Fee Related CN101872501B (en) | 2009-04-27 | 2010-04-27 | Device for detecting thickness of medium |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2249315B1 (en) |
| JP (1) | JP2010257292A (en) |
| KR (1) | KR101159961B1 (en) |
| CN (1) | CN101872501B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722933A (en) * | 2012-06-11 | 2012-10-10 | 广州广电运通金融电子股份有限公司 | Device for detecting thickness of sheet medium and method thereof |
| CN103136840A (en) * | 2013-01-23 | 2013-06-05 | 广州广电运通金融电子股份有限公司 | Magnetic levitation type slice medium thickness detecting device |
| CN103339662A (en) * | 2011-02-01 | 2013-10-02 | 日立欧姆龙金融系统有限公司 | Media-thickness detection device and automatic transaction machine |
| WO2015085811A1 (en) * | 2013-12-12 | 2015-06-18 | 广州广电运通信息科技有限公司 | Method and device for banknote identification based on thickness signal identification |
| WO2015085815A1 (en) * | 2013-12-12 | 2015-06-18 | 广州广电运通信息科技有限公司 | Method and system for recognizing bill with abnormal thickness |
| CN106898080A (en) * | 2017-03-22 | 2017-06-27 | 深圳怡化电脑股份有限公司 | Thickness detection apparatus and finance device |
| CN106909086A (en) * | 2017-03-30 | 2017-06-30 | 深圳怡化电脑股份有限公司 | The detection method and its device of a kind of abnormal data |
| CN107680243A (en) * | 2017-09-04 | 2018-02-09 | 东方通信股份有限公司 | Note thickness measurement device and measuring method based on infrared sensor transmission |
| CN112605133A (en) * | 2020-12-11 | 2021-04-06 | 杭州电子科技大学 | Rolled plate strip thickness detection device and control system |
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| JP5997018B2 (en) * | 2012-11-21 | 2016-09-21 | 日立オムロンターミナルソリューションズ株式会社 | Paper sheet thickness detection device and paper sheet identification device |
| CN104077831B (en) * | 2014-07-18 | 2016-08-24 | 广州广电运通金融电子股份有限公司 | A kind of value document magnetic detection device |
| EP3236432A4 (en) * | 2014-12-15 | 2018-01-24 | Fujitsu Frontech Limited | Thickness detection device |
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| CN103339662A (en) * | 2011-02-01 | 2013-10-02 | 日立欧姆龙金融系统有限公司 | Media-thickness detection device and automatic transaction machine |
| US9683840B2 (en) | 2012-06-11 | 2017-06-20 | Grg Banking Equipment Co., Ltd. | Device for detecting thickness of sheet-type medium and method thereof |
| CN102722933B (en) * | 2012-06-11 | 2014-08-20 | 广州广电运通金融电子股份有限公司 | Device for detecting thickness of sheet medium and method thereof |
| CN102722933A (en) * | 2012-06-11 | 2012-10-10 | 广州广电运通金融电子股份有限公司 | Device for detecting thickness of sheet medium and method thereof |
| CN103136840A (en) * | 2013-01-23 | 2013-06-05 | 广州广电运通金融电子股份有限公司 | Magnetic levitation type slice medium thickness detecting device |
| CN103136840B (en) * | 2013-01-23 | 2014-12-31 | 广州广电运通金融电子股份有限公司 | Magnetic levitation type slice medium thickness detecting device |
| US10008065B2 (en) | 2013-12-12 | 2018-06-26 | Grg Banking Equipment Co., Ltd. | Method and device for banknote identification based on thickness signal identification |
| WO2015085815A1 (en) * | 2013-12-12 | 2015-06-18 | 广州广电运通信息科技有限公司 | Method and system for recognizing bill with abnormal thickness |
| AU2014361530B2 (en) * | 2013-12-12 | 2017-07-13 | Grg Banking Equipment Co., Ltd. | Method and device for banknote identification based on thickness signal identification |
| WO2015085811A1 (en) * | 2013-12-12 | 2015-06-18 | 广州广电运通信息科技有限公司 | Method and device for banknote identification based on thickness signal identification |
| CN106898080A (en) * | 2017-03-22 | 2017-06-27 | 深圳怡化电脑股份有限公司 | Thickness detection apparatus and finance device |
| CN106909086A (en) * | 2017-03-30 | 2017-06-30 | 深圳怡化电脑股份有限公司 | The detection method and its device of a kind of abnormal data |
| CN106909086B (en) * | 2017-03-30 | 2019-06-07 | 深圳怡化电脑股份有限公司 | A kind of detection method and its device of abnormal data |
| CN107680243A (en) * | 2017-09-04 | 2018-02-09 | 东方通信股份有限公司 | Note thickness measurement device and measuring method based on infrared sensor transmission |
| CN107680243B (en) * | 2017-09-04 | 2019-11-05 | 东方通信股份有限公司 | Note thickness measurement device and measurement method based on infrared sensor transmission |
| CN112605133A (en) * | 2020-12-11 | 2021-04-06 | 杭州电子科技大学 | Rolled plate strip thickness detection device and control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010257292A (en) | 2010-11-11 |
| EP2249315B1 (en) | 2014-11-19 |
| EP2249315A1 (en) | 2010-11-10 |
| KR101159961B1 (en) | 2012-06-25 |
| KR20100118075A (en) | 2010-11-04 |
| CN101872501B (en) | 2012-08-22 |
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